describe('Storage length', () => {
  ["localStorage", "sessionStorage"].forEach(function(name) {
    test(function() {
      var storage = window[name];
      storage.clear();
      assert_equals(storage.length, 0, "storage.length")

      storage["name"] = "user1";
      storage["age"] = "20";

      assert_equals(storage.length, 2, "storage.length")
    }, name + ".length (method access)");

    test(function() {
      var storage = window[name];
      storage.clear();
      assert_equals(storage.length, 0, "storage.length")

      storage.setItem("name", "user1");
      storage.setItem("age", "20");

      assert_equals(storage.length, 2, "storage.length")
    }, name + ".length (proprty access)");
  });
});